Reinforced brake-shoe.



'J. A. PANTON.

REINFORCBD BRAKE SHOE.

APPLICATION IILD DEO. 16, 1909.

Patented N0v.1,1910.

2 SHEETS-SHEET 2.

m C. MAW) UNITED STATE-s PATENT-formes.

i lJOSEPH ALEXANDER PANTON OF WATERLOO, NEAR LIVERPOOL, ENGLAND.

REINFORCEI) BRAKE-SHOE.

To all whom it ma/y concern:

'Be it known that I, JOSEPH ALEXANDER.'

PANTON, a subject of the .King of Great Britain, residing in. Waterloo,near Liverpool, in the' county of Lancaster', in the Kingdom of England,have invented. certain new and useful Improvements in ReinforcedBrake-Shoes, of which the following is a specification.

This invention relates to reinforced brake shoes of that type whereinthe separable wearings'ole or shoe proper is provided with a reinforcingstripl or back of tough 1nalleable metal, and with a lug for the'reception of the key for attaching the brake-shoe in its place upon thebrakehead.

The object of the invention is to provide, superior means Vfor anchoringthe attaching lug to the malleable back, said means having al bearingacross substantially the full width of the back.

A further object of the invention is to form a lug separately from theback so that it may be produced from heavier or `thicker material thanthe back, thereby producing a stronger structure than where the lug isformed out of the same material as the back. When the lug has beenanchored or secured to the back, cast metal is run around the back andthe base of the lug so as to virtually make the lugan lintegral part ofthe backing. I do not, however, depend primarily upon the lug becomingan integral part of the shoe, but I rely upon the keying and anchoringof the lug in the back. Hence, the block may be worn down to the backingand yet the lug will not come o'ti.

The invention is illustrated in the annexed drawings, wherein:

Figure .l is a perspective View of a steel back and lug in their iinalform or shape: Fig. 2 a longitudinal vertical sectional View of aseparable head and shoe designed according to my invention; Fig. 3 atransverse central sectional view of the shoe, the backing and theattaching lug; Fig. 4 a perspective View showing a modified form ot theback, the lug and the means for attach ing the lug in position: and Fig.5 a transverse sectional view of the modified form taken through thelug, the back and thelSpecification'of Letters atcnt. applicati@ :neaDecember 1s, 1909, Serial N6. 533,40@

Patented Nov. 1, `1910.

l plate or backing B, `as shown in these fig-y ures,l is made of equalwidth throughout.

`At millength itA is stamped to it'orm an upward projection or hump ll,in the upper tace of whichvaretwo longitudinelly-extending slots Fw i .Gis the attaching lug, made froma blank or Hat strip of metalbent into aninverted U shape, the parallel arms` Il of which are spaced apart a.distance equal to the distance between the slots F. rlhis lug is ofthicker or' stronger material than thelbaek Il. rlhe lower ends of thearms Il are provided with slots I for the reception ot' a cotter orlockingbar J. The arms Il will be passed down through the slots F,aftcrwhirh the cotter or locking bar is passed through the openings orslots I, the bar being of sufficient length to project to eaeh side ofthe arms of the lug, as will` be clearly seen upon reference to Figs.l 2andy The cotter or locking bar lies in the recesses formed in the humpor projection E. The lug, as will be readily appreciated, is ofsullicient height to form a passageway or opening for the key K by whichthe shoe is secured to the brakehead L, see Fig. 2. lVhen the lug andlocking bar J are positioned with reference to the back, the cast metalof the shoe is run through and around the steel back and around the endsof the arms H, and the attaching cotter or locking bar J, thus firmlyfixing the back upon the body of the shoe. The lug G thus in elfectbecomes an integral part of the backing and ot' the body of the shoe andit is absolutely impossible to separate it from theother parts by reasonof the fact that the arms thereof actually become interlocked with thesteel back. The great advantage of forming the lugr (ir separate tromthe steel back lies in the fact that it can be made of thicker metalthan said back. j

In Figs. el and 5 a slightly modified form ot' the device is shown. Inthese figures thebacking B is provided -with a central opening, as P,preferably rectangular and of a size to receive the lower portion of thelug G which in this instance has the form of a hollow rectangularmembers the upright Walls H of which will be provided withoppositely-disposed openings S through which the fastening key may bepassed. To se cure the lug in place' a cross-bar or Cotter Q isemployed, the central portion of which is preferably struck up slightlyto cause it to fling the upwardly-projecting portion of the seat in theopening P formed in the back, see Fig. 5, As in the otherfigures, themetal of the body A will -be castl upon the 'back and. around the lowerportion of the lug Gr and around the cotter pin or plate Q, thussecurely holdingt the parts in position. As in theother instance, thelug will preferably be made of a metal heavier than the back.

Under both `modiications the cast metal of the shoe is preferably runthrough and around the steel back and around the flanges or cross-piecesof the lug so as to make the lug in effect van integral part of thebacking and of the bodyT of the shoe.

Having thus described my invention, what I claim is: Y

1. In'a brake-shoe, the combination of a back; a key-lug extendingthrough the back; and a locking plate extending through thedownwardly-projecting portion of the lug and underlying the back.

2. In a brake-shoeLthe combination of a back provided with anupwardly-projecting portion; a key-lug extending Vthrough saidupvvardly-projecting1 portion; and a locking bar or pin passing t roughthe downwardlyextendlng portion of the lug and underlyback. y

vided with a slot, said arms being adapted to be passed down through theslots in the back; and a locking plate orl key passing through the slotsin the arms and underlying the back. A,

4. In a brake-shoe, the combination of a back having anupwardly-extending portion or section extending across the same, saidportion having two parallel slots formed therein; a key-lug formed of aseparate piece, bent into an inverted U-form, each arm thereof having aslot formed in its lower portion, said arms being adapted to be passedthrough the slots in the back; and a locking plate or key passingthrough the slots in the arms and underlying the back.

In witness whereof, Iv have hereunto signed my name this 4th day' ofDecember 1909, in the presence of two subscribing witnesses.

' JOSEPH ALEXANDER. PANTON.

Witnesses:

G. C. DYMOND, RICHARD W. WILLIAMS.

